// This example demonstrates creating a script which pays to a bitcoin address.
// It also prints the created script hex and uses the DisasmString function to
// display the disassembled script.
func ExamplePayToAddrScript() {
// Parse the address to send the coins to into a btcutil.Address
// which is useful to ensure the accuracy of the address and determine
// the address type. It is also required for the upcoming call to
// PayToAddrScript.
addressStr := "12gpXQVcCL2qhTNQgyLVdCFG2Qs2px98nV"
address, err := btcutil.DecodeAddress(addressStr, &btcnet.MainNetParams)
if err != nil {
fmt.Println(err)
return
}
// Create a public key script that pays to the address.
script, err := btcscript.PayToAddrScript(address)
if err != nil {
fmt.Println(err)
return
}
fmt.Printf("Script Hex: %x\n", script)
disasm, err := btcscript.DisasmString(script)
if err != nil {
fmt.Println(err)
return
}
fmt.Println("Script Disassembly:", disasm)
// Output:
// Script Hex: 76a914128004ff2fcaf13b2b91eb654b1dc2b674f7ec6188ac
// Script Disassembly: OP_DUP OP_HASH160 128004ff2fcaf13b2b91eb654b1dc2b674f7ec61 OP_EQUALVERIFY OP_CHECKSIG
}
func TestSecureSecretoxKey(t *testing.T) {
key1, ok := secretbox.GenerateKey()
if !ok {
fmt.Println("pwkey: failed to generate test key")
t.FailNow()
}
skey, ok := SecureSecretboxKey(testPass, key1)
if !ok {
fmt.Println("pwkey: failed to secure secretbox key")
t.FailNow()
}
key, ok := RecoverSecretboxKey(testPass, skey)
if !ok {
fmt.Println("pwkey: failed to recover box private key")
t.FailNow()
}
if !bytes.Equal(key[:], key1[:]) {
fmt.Println("pwkey: recovered key doesn't match original")
t.FailNow()
}
if _, ok = RecoverBoxKey([]byte("Password"), skey); ok {
fmt.Println("pwkey: recover should fail with bad password")
t.FailNow()
}
}
func TestVersion(t *testing.T) {
v := new(Version)
v.Version = uint16(1)
v.Timestamp = time.Unix(0, 0)
v.IpAddress = net.ParseIP("1.2.3.4")
v.Port = uint16(4444)
v.UserAgent = "Hello World!"
verBytes := v.GetBytes()
if len(verBytes) != verLen+12 {
fmt.Println("Incorrect Byte Length: ", verBytes)
t.Fail()
}
v2 := new(Version)
err := v2.FromBytes(verBytes)
if err != nil {
fmt.Println("Error Decoding: ", err)
t.FailNow()
}
if v2.Version != 1 || v2.Timestamp != time.Unix(0, 0) || v2.IpAddress.String() != "1.2.3.4" || v2.Port != 4444 || v2.UserAgent != "Hello World!" {
fmt.Println("Incorrect decoded version: ", v2)
t.Fail()
}
}
func getUberCost(start locationStruct, end locationStruct) (int, int, float64, string) {
uberURL := strings.Replace(uberRequestURL, startLatitude, strconv.FormatFloat(start.Coordinate.Lat, 'f', -1, 64), -1)
uberURL = strings.Replace(uberURL, startLongitude, strconv.FormatFloat(start.Coordinate.Lng, 'f', -1, 64), -1)
uberURL = strings.Replace(uberURL, endLatitude, strconv.FormatFloat(end.Coordinate.Lat, 'f', -1, 64), -1)
uberURL = strings.Replace(uberURL, endLongitude, strconv.FormatFloat(end.Coordinate.Lng, 'f', -1, 64), -1)
res, err := http.Get(uberURL)
if err != nil {
//w.Write([]byte(`{ "error": "Unable to parse data from Google. Error at res, err := http.Get(url) -- line 75"}`))
fmt.Println("Unable to parse data from Google. Error at res, err := http.Get(url) -- line 75")
panic(err.Error())
}
body, err := ioutil.ReadAll(res.Body)
if err != nil {
//w.Write([]byte(`{ "error": "Unable to parse data from Google. body, err := ioutil.ReadAll(res.Body) -- line 84"}`))
fmt.Println("Unable to parse data from Google. Error at res, err := http.Get(url) -- line 84")
panic(err.Error())
}
var uberResult UberResults
_ = json.Unmarshal(body, &uberResult)
return uberResult.Prices[0].LowEstimate, uberResult.Prices[0].Duration, uberResult.Prices[0].Distance, uberResult.Prices[0].ProductID
}
func ExampleLambda_CreateFunction() {
svc := lambda.New(session.New())
params := &lambda.CreateFunctionInput{
Code: &lambda.FunctionCode{ // Required
S3Bucket: aws.String("S3Bucket"),
S3Key: aws.String("S3Key"),
S3ObjectVersion: aws.String("S3ObjectVersion"),
ZipFile: []byte("PAYLOAD"),
},
FunctionName: aws.String("FunctionName"), // Required
Handler: aws.String("Handler"), // Required
Role: aws.String("RoleArn"), // Required
Runtime: aws.String("Runtime"), // Required
Description: aws.String("Description"),
MemorySize: aws.Int64(1),
Publish: aws.Bool(true),
Timeout: aws.Int64(1),
}
resp, err := svc.CreateFunction(params)
if err != nil {
// Print the error, cast err to awserr.Error to get the Code and
// Message from an error.
fmt.Println(err.Error())
return
}
// Pretty-print the response data.
fmt.Println(resp)
}
func main() {
file, err := os.Create("samp.txt")
if err != nil {
log.Fatal(err)
}
file.WriteString("This is some random text")
file.Close()
stream, err := ioutil.ReadFile("samp.txt")
if err != nil {
log.Fatal(err)
}
readString := string(stream)
fmt.Println(readString)
randInt := 5
// randFloat := 10.5
randString := "100"
// randString2 := "250.5"
fmt.Println(float64(randInt))
newInt, _ := strconv.ParseInt(randString, 0, 64)
newFloat, _ := strconv.ParseFloat(randString, 64)
fmt.Println(newInt, newFloat)
}
func main() {
consumer := consumer.New(dopplerAddress, &tls.Config{InsecureSkipVerify: true}, nil)
consumer.SetDebugPrinter(ConsoleDebugPrinter{})
messages, err := consumer.RecentLogs(appGuid, authToken)
if err != nil {
fmt.Printf("===== Error getting recent messages: %v\n", err)
} else {
fmt.Println("===== Recent logs")
for _, msg := range messages {
fmt.Println(msg)
}
}
fmt.Println("===== Streaming metrics")
msgChan, errorChan := consumer.Stream(appGuid, authToken)
go func() {
for err := range errorChan {
fmt.Fprintf(os.Stderr, "%v\n", err.Error())
}
}()
for msg := range msgChan {
fmt.Printf("%v \n", msg)
}
}
func main() {
var opts struct {
ClientID string `long:"client_id" required:"true"`
ClientSecret string `long:"client_secret" required:"true"`
}
_, err := flags.Parse(&opts)
if err != nil {
log.Fatalln(err)
return
}
config := &oauth2.Config{
ClientID: opts.ClientID,
ClientSecret: opts.ClientSecret,
RedirectURL: "urn:ietf:wg:oauth:2.0:oob",
Scopes: []string{"https://www.googleapis.com/auth/gmail.send"},
Endpoint: oauth2.Endpoint{
AuthURL: "https://accounts.google.com/o/oauth2/auth",
TokenURL: "https://accounts.google.com/o/oauth2/token",
},
}
var code string
url := config.AuthCodeURL("")
fmt.Println("ブラウザで以下のURLにアクセスし、認証してCodeを取得してください。")
fmt.Println(url)
fmt.Println("取得したCodeを入力してください")
fmt.Scanf("%s\n", &code)
token, err := config.Exchange(context.Background(), code)
if err != nil {
log.Fatalln("Exchange: ", err)
}
fmt.Println("RefreshToken: ", token.RefreshToken)
}
func initDir(args *argContainer) {
err := checkDirEmpty(args.cipherdir)
if err != nil {
fmt.Printf("Invalid cipherdir: %v\n", err)
os.Exit(ERREXIT_INIT)
}
// Create gocryptfs.conf
cryptfs.Info.Printf("Choose a password for protecting your files.\n")
password := readPasswordTwice(args.extpass)
err = cryptfs.CreateConfFile(args.config, password, args.plaintextnames, args.scryptn)
if err != nil {
fmt.Println(err)
os.Exit(ERREXIT_INIT)
}
if args.diriv && !args.plaintextnames {
// Create gocryptfs.diriv in the root dir
err = cryptfs.WriteDirIV(args.cipherdir)
if err != nil {
fmt.Println(err)
os.Exit(ERREXIT_INIT)
}
}
cryptfs.Info.Printf(colorGreen + "The filesystem has been created successfully.\n" + colorReset)
cryptfs.Info.Printf(colorGrey+"You can now mount it using: %s %s MOUNTPOINT\n"+colorReset,
PROGRAM_NAME, args.cipherdir)
os.Exit(0)
}
// txnCommandFunc executes the "txn" command.
func txnCommandFunc(c *cli.Context) {
if len(c.Args()) != 0 {
panic("unexpected args")
}
reader := bufio.NewReader(os.Stdin)
next := compareState
txn := &pb.TxnRequest{}
for next != nil {
next = next(txn, reader)
}
conn, err := grpc.Dial("127.0.0.1:12379")
if err != nil {
panic(err)
}
etcd := pb.NewEtcdClient(conn)
resp, err := etcd.Txn(context.Background(), txn)
if err != nil {
fmt.Println(err)
}
if resp.Succeeded {
fmt.Println("executed success request list")
} else {
fmt.Println("executed failure request list")
}
}
func TestNew(t *testing.T) {
config.SetHome(filepath.Join("..", "..", "cmd", "roy", "data"))
mi, err := newMIMEInfo()
if err != nil {
t.Error(err)
}
tpmap := make(map[string]struct{})
for _, v := range mi {
//fmt.Println(v)
//if len(v.Magic) > 1 {
// fmt.Printf("Multiple magics (%d): %s\n", len(v.Magic), v.MIME)
//}
for _, c := range v.Magic {
for _, d := range c.Matches {
tpmap[d.Typ] = struct{}{}
if len(d.Mask) > 0 {
if d.Typ == "string" {
fmt.Println("MAGIC: " + d.Value)
} else {
fmt.Println("Type: " + d.Typ)
}
fmt.Println("MASK: " + d.Mask)
}
}
}
}
/*
for k, _ := range tpmap {
fmt.Println(k)
}
*/
if len(mi) != 1495 {
t.Errorf("expecting %d MIMEInfos, got %d", 1495, len(mi))
}
}
func main() {
{
errChan := make(chan error)
go func() {
errChan <- nil
}()
select {
case v := <-errChan:
fmt.Println("even if nil, it still receives", v)
case <-time.After(time.Second):
fmt.Println("time-out!")
}
// even if nil, it still receives <nil>
}
{
errChan := make(chan error)
errChan = nil
go func() {
errChan <- nil
}()
select {
case v := <-errChan:
fmt.Println("even if nil, it still receives", v)
case <-time.After(time.Second):
fmt.Println("time-out!")
}
// time-out!
}
}
func main() {
if Same(tree.New(1), tree.New(1)) && !Same(tree.New(1), tree.New(2)) {
fmt.Println("PASSED")
} else {
fmt.Println("FAILED")
}
}
// This example demonstrates extracting information from a standard public key
// script.
func ExampleExtractPkScriptAddrs() {
// Start with a standard pay-to-pubkey-hash script.
scriptHex := "76a914128004ff2fcaf13b2b91eb654b1dc2b674f7ec6188ac"
script, err := hex.DecodeString(scriptHex)
if err != nil {
fmt.Println(err)
return
}
// Extract and print details from the script.
scriptClass, addresses, reqSigs, err := btcscript.ExtractPkScriptAddrs(
script, &btcnet.MainNetParams)
if err != nil {
fmt.Println(err)
return
}
fmt.Println("Script Class:", scriptClass)
fmt.Println("Addresses:", addresses)
fmt.Println("Required Signatures:", reqSigs)
// Output:
// Script Class: pubkeyhash
// Addresses: [12gpXQVcCL2qhTNQgyLVdCFG2Qs2px98nV]
// Required Signatures: 1
}
func NewWatcher(paths []string) {
watcher, err := fsnotify.NewWatcher()
if err != nil {
log.Fatal(err)
}
go func() {
for {
select {
case e := <-watcher.Event:
fmt.Println(e)
go Autobuild()
case err := <-watcher.Error:
log.Fatal("error:", err)
}
}
}()
for _, path := range paths {
fmt.Println(path)
err = watcher.Watch(path)
if err != nil {
log.Fatal(err)
}
}
}
func ExampleCloudFormation_EstimateTemplateCost() {
svc := cloudformation.New(nil)
params := &cloudformation.EstimateTemplateCostInput{
Parameters: []*cloudformation.Parameter{
{ // Required
ParameterKey: aws.String("ParameterKey"),
ParameterValue: aws.String("ParameterValue"),
UsePreviousValue: aws.Bool(true),
},
// More values...
},
TemplateBody: aws.String("TemplateBody"),
TemplateURL: aws.String("TemplateURL"),
}
resp, err := svc.EstimateTemplateCost(params)
if err != nil {
// Print the error, cast err to awserr.Error to get the Code and
// Message from an error.
fmt.Println(err.Error())
return
}
// Pretty-print the response data.
fmt.Println(resp)
}
func Autobuild() {
defer func() {
if err := recover(); err != nil {
str := ""
for i := 1; ; i += 1 {
_, file, line, ok := runtime.Caller(i)
if !ok {
break
}
str = str + fmt.Sprintf("%v,%v", file, line)
}
builderror <- str
}
}()
fmt.Println("Autobuild")
path, _ := os.Getwd()
os.Chdir(path)
bcmd := exec.Command("go", "build")
var out bytes.Buffer
var berr bytes.Buffer
bcmd.Stdout = &out
bcmd.Stderr = &berr
err := bcmd.Run()
if err != nil {
fmt.Println("run error", err)
}
if out.String() == "" {
Kill()
} else {
builderror <- berr.String()
}
}
func main() {
// Open device
handle, err = pcap.OpenLive(device, snapshot_len, promiscuous, timeout)
if err != nil {
log.Fatal(err)
}
defer handle.Close()
bpfInstructions := []pcap.BPFInstruction{
{0x20, 0, 0, 0xfffff038}, // ld rand
{0x54, 0, 0, 0x00000004},
{0x15, 0, 1, 0x00000004},
{0x06, 0, 0, 0x0000ffff},
{0x06, 0, 0, 0000000000},
}
err = handle.SetBPFInstructionFilter(bpfInstructions)
if err != nil {
log.Fatal(err)
}
fmt.Println("Capturing ~4th packet (randomly).")
packetSource := gopacket.NewPacketSource(handle, handle.LinkType())
for packet := range packetSource.Packets() {
// Do something with a packet here.
fmt.Println(packet)
}
}
func ExampleLogAndNotFound() {
// Note: The LogAnd* functions all work in a similar fashion.
// Create an appengine context (in this case a mock one).
c, err := appenginetesting.NewContext(nil)
if err != nil {
fmt.Println("creating context", err)
return
}
defer c.Close()
// Make the request and writer.
w := httptest.NewRecorder()
r, err := http.NewRequest("GET", "/example/test", nil)
if err != nil {
fmt.Println("creating request", err)
return
}
// Simulate an error
err = fmt.Errorf("WHERE ARE THEY TRYING TO GO? LOL")
LogAndNotFound(c, w, r, err)
// Print out what would be returned down the pipe.
fmt.Println("Response Code:", w.Code)
fmt.Println("Response Body:", w.Body.String())
// Output:
// Response Code: 404
// Response Body: {"Type":"error","Message":"Not found."}
}
func writeInput(conn *net.TCPConn) {
fmt.Print("Enter username: "******"username": string(username)})
if err != nil {
fmt.Println("It is not property name")
return
}
err = common.WriteMsg(conn, string(str))
if err != nil {
log.Println(err)
}
fmt.Println("Enter text: ")
for {
text, err := reader.ReadString('\n')
if err != nil {
log.Fatal(err)
}
err = common.WriteMsg(conn, username+": "+text)
if err != nil {
log.Println(err)
}
}
}
func main() {
arr := [15]int{23, 3, 21, 5, 78, 52, 46, 73, 46, 73, 62, 77, 43, 48, 25}
fmt.Println(arr)
smallest := arr[0]
var secondSmallest int
for _, i := range arr {
if i < smallest {
smallest = i
}
}
if smallest == arr[0] {
secondSmallest = arr[1]
} else {
secondSmallest = arr[0]
}
for _, i := range arr {
if i == smallest {
continue
}
if i < secondSmallest {
secondSmallest = i
}
}
fmt.Println("The second smallest is ", secondSmallest)
}
func main() {
scanner := bufio.NewScanner(os.Stdin)
Loop:
for scanner.Scan() {
args := strings.SplitN(scanner.Text(), " ", 3)
cmd, key, val := parseArgs(args)
switch cmd {
case "SET":
set(key, val)
case "UNSET":
unset(key)
case "GET":
get(key)
case "NUMEQUALTO", "NEQ":
fmt.Println(count[key])
case "BEGIN":
begin()
case "ROLLBACK":
rollback()
case "COMMIT":
commit()
case "END":
break Loop
case "":
continue Loop
default:
fmt.Println("INVALID COMMAND")
}
}
if err := scanner.Err(); err != nil {
fmt.Fprintln(os.Stderr, "I/0 ERROR:", err)
}
fmt.Println("HAVE A NICE DAY")
}
func getTripDetails(w http.ResponseWriter, r *http.Request) {
tripID := r.URL.Query().Get(":tripID")
fmt.Println(tripID)
var result UberResponse
c, s := getMongoCollection("trips")
defer s.Close()
err := c.Find(bson.M{"_id": bson.ObjectIdHex(tripID)}).One(&result)
if err != nil {
fmt.Println("err = c.Find(bson.M{\"id\": bson.M{\"$oid\":", tripID, "}}).One(&result)")
log.Fatal(err)
}
fmt.Println(result)
//Returning the result to user
w.WriteHeader(http.StatusOK)
w.Header().Set("Content-Type", "application/json")
outputJSON, err := json.Marshal(result)
if err != nil {
w.Write([]byte(`{ "error": "Unable to marshal response. body, outputJSON, err := json.Marshal(t) -- line 110"}`))
panic(err.Error())
}
w.Write(outputJSON)
}
func main() {
flag.Usage = usage
flag.Parse()
if *f_version {
fmt.Println("miniccc", version.Revision, version.Date)
fmt.Println(version.Copyright)
os.Exit(0)
}
logSetup()
// signal handling
sig := make(chan os.Signal, 1024)
signal.Notify(sig, os.Interrupt, syscall.SIGTERM)
// start a ron client
var err error
c, err = ron.NewClient(*f_port, *f_parent, *f_serial, *f_path)
if err != nil {
log.Fatal("creating ron node: %v", err)
}
log.Debug("starting ron client with UUID: %v", c.UUID)
go client()
<-sig
// terminate
}
func NewServer() *Server {
s := &Server{
port: common.GetConfInt("server", "port", 8080),
maxClients: common.GetConfInt("server", "max_clients", 100000),
clientNum: 0,
acceptTimeout: common.GetConfSecond("server", "accept_timeout", 60*5),
connTimeout: common.GetConfSecond("server", "connection_timeout", 60*3),
headerLen: common.GetConfInt("server", "header_length", 10),
maxBodyLen: common.GetConfInt("server", "max_body_length", 102400),
running: false,
heartbeat: time.Now().Unix(),
workerNum: common.WorkerNum,
currentWorker: -1,
logger: common.NewLogger("server"),
}
if s == nil {
fmt.Println("new server failed")
return nil
}
if s.logger == nil {
fmt.Println("new server logger failed")
return nil
}
ip, err := common.Conf.String("server", "bind")
if err != nil {
ip = ""
}
s.ip = ip
return s
}
func main() {
starttime := time.Now()
max := 1500000
set := make(map[int]int)
for m := 1; (2*m*m)+(2*m) < max; m++ {
for n := m%2 + 1; n < m; n += 2 {
if euler.GCD(int64(m), int64(n)) == 1 && (m-n)%2 == 1 {
for k := 1; k*((2*m*m)+(2*m*n)) < max; k++ {
set[k*((2*m*m)+(2*m*n))]++
}
}
}
}
total := 0
for _, sum := range set {
if sum == 1 {
total++
}
}
fmt.Println(total)
fmt.Println("Elapsed time:", time.Since(starttime))
}
func TestMessage(t *testing.T) {
log := make(chan string, 100)
priv, x, y := encryption.CreateKey(log)
pub := elliptic.Marshal(elliptic.P256(), x, y)
address := encryption.GetAddress(log, x, y)
msg := new(Message)
msg.AddrHash = MakeHash(address)
msg.TxidHash = MakeHash([]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16})
msg.Timestamp = time.Now().Round(time.Second)
msg.Content = *encryption.Encrypt(log, pub, "Hello World!")
mBytes := msg.GetBytes()
if mBytes == nil {
fmt.Println("Error Encoding Message!")
t.FailNow()
}
msg2 := new(Message)
msg2.FromBytes(mBytes)
if string(msg2.AddrHash.GetBytes()) != string(msg.AddrHash.GetBytes()) || string(msg2.TxidHash.GetBytes()) != string(msg.TxidHash.GetBytes()) || msg2.Timestamp.Unix() != msg.Timestamp.Unix() {
fmt.Println("Message Header incorrect: ", msg2)
t.FailNow()
}
if string(encryption.Decrypt(log, priv, &msg.Content)[:12]) != "Hello World!" {
fmt.Println("Message content incorrect: ", string(encryption.Decrypt(log, priv, &msg.Content)[:12]))
t.Fail()
}
}
func main() {
message := "Hello Go World!"
fmt.Println(a)
fmt.Println(message)
fmt.Println(b)
fmt.Println(c)
}
func TestObj(t *testing.T) {
o := new(Obj)
o.HashList = make([]Hash, 2, 2)
o.HashList[0] = MakeHash([]byte{'a', 'b', 'c', 'd'})
o.HashList[1] = MakeHash([]byte{'e', 'f', 'g', 'h'})
o2 := new(Obj)
oBytes := o.GetBytes()
if len(oBytes) != 2*hashLen {
fmt.Println("Incorrect Obj Length! ", oBytes)
t.FailNow()
}
err := o2.FromBytes(oBytes)
if err != nil {
fmt.Println("Error while decoding obj: ", err)
t.FailNow()
}
if string(o2.HashList[0].GetBytes()) != string(o.HashList[0].GetBytes()) || string(o2.HashList[1].GetBytes()) != string(o.HashList[1].GetBytes()) {
fmt.Println("Incorrect decoding of obj: ", o2)
t.Fail()
}
}
func main() {
var fName string = "Shekhar"
var lName = "Gulati"
var fullName = fName + " " + lName
fmt.Println(fullName)
fmt.Println(fName, lName)
}